HB52H / HB52 Ultralight Compact RTK GNSS Receiver — Heading, Pitch & Roll
Description
Septentrio InsideMosaic-G5Ultralight
The HB52H / HB52 is an ultralight, compact all-constellation all-frequency RTK GNSS receiver built on the Septentrio Mosaic-G5 platform. Uniquely offering simultaneous heading, pitch, and roll output from dual GNSS antennas — alongside 0.6 cm RTK accuracy, <10 ms latency, and a built-in 32 GB TF card slot — the HB52 sets a performance benchmark for autonomous navigation in UAVs, AGVs, autonomous driving platforms, and precision robotics. At just 43.8 × 34.0 × 11.5 mm, it is one of the most compact high-performance GNSS receivers available.
HB52 vs HB52H — Which Variant?
HB52 — Heading
Dual-antenna configuration providing positioning + heading output. Ideal for applications where true-north heading is required alongside precise position — UAVs, AGVs, marine vessels, and construction machines.
HB52H — Heading + Pitch/Roll
Dual-antenna configuration providing positioning + heading + pitch/roll output simultaneously. Designed for full 3D attitude determination — autonomous ground robots, precision agriculture machines, eVTOL platforms, and ADAS systems requiring complete orientation data.
Core Technologies (Septentrio+)
AIM+ — Anti-Jamming & Anti-Spoofing
Advanced Interference Mitigation with interference indicator, real-time interference mitigation, and spectrum measurement display. Galileo OSNMA cryptographic authentication rejects spoofed signals — keeping autonomous systems reliable in contested RF environments.
APME+ — Enhanced Multipath Mitigation
Advanced Multipath Effect Mitigation & Elimination+ reduces position errors from reflected signals in buildings, terrain, ports, and urban canyons — maintaining RTK performance where lesser receivers lose fix.
LOCK+ — Vibration-Resilient Tracking
Enhanced continuous signal tracking under severe vibration and mechanical shock. Delivers 1-second reacquisition time after signal interruption — critical for drones navigating under tree canopy or through building gaps.
<10 ms Low-Latency Navigation
99.9% of outputs delivered in under 10 ms — the low, predictable latency required for stable closed-loop control systems in autonomous vehicles, precision UAVs, and real-time servo positioning applications.
32 GB TF Card Data Logging
Integrated TF (microSD) card slot supports up to 32 GB for onboard GNSS raw data logging in RINEX format — enabling post-processed kinematic (PPK) survey, flight path analysis, and offline data review without external logging hardware.
Ultralight: 43.8 × 34.0 × 11.5 mm
One of the most compact full-performance RTK GNSS receivers available. Integrated TCXO, LNA, and SD card in a single module — minimising board space, weight, and BOM complexity for weight-critical UAV and wearable robotic platforms.
The HB52H is the only ultralight GNSS module delivering simultaneous heading + pitch + roll from dual antennas, with <10 ms latency and onboard 32 GB raw data logging — purpose-built for full 3D attitude-aware autonomous systems.
Heading & Attitude Accuracy
| Antenna Baseline | Heading Accuracy | Pitch / Roll Accuracy (HB52H) |
|---|---|---|
| 1 m | 0.15° | 0.25° |
| 5 m | 0.03° | 0.05° |
Application Areas
UAV
Drones & VTOL survey
Robotics
Full 3D attitude AGV & AMR
ADAS
Autonomous driving systems
Agriculture
Auto-steer & crop robots
eVTOL
Urban air mobility
Supported GNSS Signals
GPS
L1C/A · L1C · L2C · L2P(Y) · L5
BeiDou
B1I · B1C · B2a · B2I · B2b · B3I
GLONASS
L1CA · L2CA · L2P · L3 CDMA
Galileo
E1 · E5a · E5b · E6 · OSNMA
QZSS
L1C/A · L1C/B · L2C · L5 · L6
NavIC / SBAS
NavIC · WAAS · EGNOS · MSAS · GAGAN
Performance Specifications
| Positioning Accuracy (RMS) | |
|---|---|
| RTK Horizontal | 0.6 cm + 0.5 ppm |
| RTK Vertical | 1.0 cm + 1 ppm |
| Standalone Horizontal | 1.2 m |
| Standalone Vertical | 1.9 m |
| DGNSS Horizontal | 0.4 m |
| DGNSS Vertical | 0.7 m |
| Timing, Velocity & Latency | |
| PPS Timing Accuracy | 1.4 ns (RMS) |
| Event Accuracy | <3 ns |
| Velocity Accuracy | 0.03 m/s (RMS) = 3 cm/s |
| Navigation Latency | 99.9% <10 ms |
| Acquisition & Tracking | |
| Hardware Channels | 789 |
| Tracking Sensitivity | 20 dB-Hz |
| Acquisition Sensitivity | 30 dB-Hz |
| Cold Start TTFF | <35 seconds |
| Warm Start TTFF | <10 seconds |
| Reacquisition | 1 second |
| RTK Initialization Time | 7 seconds (typical) |
| Data Update Rate | 20 Hz |
| Baud Rate | 4,800 – 4M bps (default 115,200) |
| Antenna | |
| Single Antenna LNA Range | 15 – 50 dB |
| Dual Antenna LNA Range | 15 – 35 dB |
| Antenna Bias Voltage | 3.0 – 5.5 V (150 mA current limit) |
| Physical | |
| Dimensions | 43.8 mm × 34.0 mm × 11.5 mm (±0.2 mm) |
| Onboard Storage | TF card slot — up to 32 GB |
| Data Formats | |
| Output | NMEA 0183 (v2.3/v3.03/v4.0) · Septentrio SBF · RINEX |
| Correction Input | RTCM v3.x (MSM) · CMR / CMR+ |
Pin Definitions
Power & Ground
VCCPowerMain power supply
GNDGroundSystem ground reference
PWRI/OPower control signal
UART & I2C
RX1InputUART1 Receive
TX1OutputUART1 Transmit
RX2InputUART2 Receive
TX2OutputUART2 Transmit
SCLBidir.I2C Clock
SDABidir.I2C Data
Timing & Storage
PPSInputPulse Per Second timing
SDBidir.SD card SPI CS / SDIO interface
Frequently Asked Questions
What is the difference between HB52 and HB52H?
The HB52 provides positioning + heading from dual antennas. The HB52H additionally outputs pitch and roll — enabling full 3D attitude determination. At a 1 m baseline, heading is 0.15° and pitch/roll is 0.25°; at 5 m the figures improve to 0.03° and 0.05° respectively. Choose HB52H when your application requires complete orientation data, such as autonomous ground robots, eVTOL, or ADAS systems.
How does the HB52 differ from the HB51?
The HB52/H adds pitch/roll output, NavIC and SBAS signal support, RINEX data logging, a 32 GB TF card slot, CMR/CMR+ correction input, and a smaller 43.8 × 34.0 mm form factor vs the HB51’s 65.5 × 58.4 mm board. The HB52 also introduces sub-10 ms latency spec and 1-second reacquisition — features suited to latency-critical control loops.
What is the navigation latency of the HB52?
99.9% of navigation outputs are delivered in under 10 ms. This low, predictable latency is critical for stable closed-loop control in autonomous vehicles, precision UAVs, and real-time servo systems where control loop timing must be consistent.
Can the HB52 log raw GNSS data onboard?
Yes. The HB52 has a built-in TF card slot supporting up to 32 GB for onboard logging in RINEX format. This enables PPK (Post-Processed Kinematic) workflows for survey-grade accuracy without a continuous RTK base station connection.
Is the HB52 compatible with ArduPilot, PX4, and ROS?
Yes. The HB52 is explicitly designed to be compatible with popular open-source autopilots. NMEA 0183 and SBF output over UART aligns with ArduPilot GPS driver, PX4 GPS module, and ROS NMEA NavSat configurations.
Does Eview offer volume OEM pricing for the HB52?
Yes. OEM pricing, engineering samples, and export documentation are available for Canada, the US, Europe, and Asia-Pacific customers. Contact tina.ng@gnss-solutions.com — response within 24 hours.
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